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Possible causes

Faulty Coolant Pump Relay
Faulty Coolant Pump
Coolant Pump harness is open or shorted
Coolant Pump poor electrical connection

Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.


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Discussion Starter #3
Relay is good, connector get power, the pump works if I connect 12v direct, not sure if the signal back to the Ecu is not working from the water pump. Any ideas, I’m stuck on this
 
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